Burner assembly for gas burners of radiant heating type

ABSTRACT

Burner assembly for a gas burner of radiant heating type including a burner chamber for receiving mixed gas, a burner mat on top of the burner chamber for making combustion, and a baffle part between a bottom of the burner mat and a side of the burner chamber the mixed gas is introduced into the burner chamber therethrough, for uniform distribution of the mixed gas to an entire part of the burner mat.

TECHNICAL FIELD

The present invention relates to gas burners of radiant heating type,and more particularly, to a burner assembly for a gas burner of radiantheating type, in which mixed gas flows to an entire part of a burnermat, uniformly.

BACKGROUND ART

The present invention relates to gas burners of radiant heating type,and more particularly, to a burner assembly therefore. In general, thegas burner of radiant heating type is a range in which a heating objectis heated with a radiant wave emitted from a radiant body when theradiant body is heated by burning a mixed gas of a fuel and air, to cookfood.

FIG. 1 illustrates a related art gas burner of radiant heating type,schematically. That is, the related art gas burner of radiant heatingtype is provided with an oven part 10, and a top burner part 20.

The top burner part 20 is provided with a burner assembly shown in FIG.2. The related art burner assembly will be described with reference toFIG. 2.

The related art burner assembly is provided with a burner housing 21, aglass plate 22, a mixing tube 23, a burner chamber 24, and a burner mat25. The burner housing 21 shapes an outside of the burner assembly, andforms a combustion space. The glass plate 22 is placed on top of theburner housing 21 to close an upper part of the burner assembly.

The mixing tube 23 is a tube in which fuel and air are introducedtherein and mixed together, and is in communication with the burnerchamber 24. The burner chamber 24 has a closed circumference and anopened top, for receiving the mixed gas from the mixing tube 23, andstoring the mixed gas therein. The opened top of the burner chamber 24is in communication with an inside space of the burner housing 21.

The burner mat 25 is placed on the burner chamber 24, for burning themixed gas from the burner chamber 24. The burner mat 25 makes surfacecombustion of the mixed gas, and serves as a radiant body for emitting aradiant wave.

The operation of the burner assembly will be described.

When a user ignites in a state a heating object is placed on the glassplate 22, the fuel and air are introduced into the mixing tube 23, andmixed therein during the fuel and air pass through the mixing tube 23.

Then, the mixed gas is introduced into the burner chamber 24 incommunication with the mixing tube 23, passes through the burner mat 25,and blows out into the inside of the combustion space of the burnerhousing 21. At the same time with this, the mixed gas is ignited with anigniting spark generated by an igniting means (not shown).

The mixed gas burns on a surface of the burner mat 25, and the burnermat 25 emits a radiant wave as the burner mat 25 is heated by thecombustion. Then, the radiant wave transmits the glass plate 22, andheats the heating object, to cook food.

However, the related art burner assembly has a problem in that, a majorportion of the mixed gas supplied to an inside of the burner chamber 24through the mixing tube 23 flows toward a central part of the burner mat25, uniform surface combustion throughout an entire part of the burnermat 25 has failed.

Particularly, in a case the burner assembly has a large size, for anexample, if, not a small kettle, but a large cooking container with alarge surface area is heated, heating of an outer part of the largecooking container has failed.

Moreover, in a case the gas supply is reduced for low temperatureheating, to cause an extreme shortage of the mixed gas supplied to theburner chamber 24 compared to an area of the burner mat 25, thecombustion takes place only in a central part of the burner mat 25 themixed gas supply thereto is smooth, but not in an outer part of theburner mat 25.

DISCLOSURE OF INVENTION

An object of the present invention designed to solve the foregoingproblems lies on providing a burner assembly which enables uniformdistribution of mixed gas, which is passed through a mixing tube andsupplied to an inside of the burner chamber, throughout an entire partof the burner mat.

The object of the present invention can be achieved by providing aburner assembly for a gas burner of radiant heating type including aburner chamber for receiving mixed gas, a burner mat on top of theburner chamber for making combustion, and a baffle part between a bottomof the burner mat and a side of the burner chamber the mixed gas isintroduced into the burner chamber therethrough, for uniformdistribution of the mixed gas to an entire part of the burner mat.

The baffle part includes a mesh form of a baffle plate in the burnerchamber, and the baffle part further includes a supporting part forholding the baffle plate inside of the burner chamber.

In other aspect of the present invention, there is provided a burnerassembly for a gas burner of radiant heating type including a burnerchamber for receiving mixed gas, a burner mat on top of the burnerchamber for making combustion, a baffle part of a substantiallycylindrical form between a bottom of the burner mat and a side of theburner chamber the mixed gas is introduced into the burner chambertherethrough, having a bottom in communication with a side of an insideof the burner chamber the mixed gas is introduced to the burner chambertherethrough, and a circumference with a plurality of vanes for guidingthe mixed gas toward the circumference of an inside of the burnerchamber.

In another aspect of the present invention, there is provided a burnerassembly for a gas burner of radiant heating type including a burnerchamber for receiving mixed gas, a burner mat on top of the burnerchamber for making combustion, an impeller at an opening the mixed gasis introduced into the burner chamber therethrough, for guiding themixed gas toward a circumference of an inside of the burner chamber.

BRIEF DESCRIPTION OF DRAWINGS

The accompanying drawings, which are included to provide a furtherunderstanding of the invention, illustrate embodiment(s) of theinvention and together with the description serve to explain theprinciple of the invention.

In the drawings;

FIG. 1 illustrates a perspective view of an outside appearance of arelated art gas burner of radiant heating type;

FIG. 2 illustrates a section showing key parts of a related art burnerassembly for a gas burner of radiant heating type, schematically;

FIG. 3 illustrates a section of a burner assembly for a gas burner ofradiant heating type in accordance with a first preferred embodiment ofthe present invention, schematically;

FIGS. 4 to 7 illustrate sections each showing an example of variation ofthe burner assembly in accordance with a first preferred embodiment ofthe present invention;

FIG. 8 illustrates a section of a burner assembly for a gas burner ofradiant heating type in accordance with a second preferred embodiment ofthe present invention, schematically;

FIGS. 9A and 9B illustrate plan views each showing a flow guide in aburner assembly for a gas burner of radiant heating type in accordancewith a second preferred embodiment of the present invention,schematically;

FIG. 10 illustrates a section of an example of a variation of a burnerassembly for a gas burner of radiant heating type in accordance with asecond preferred embodiment of the present invention;

FIG. 11 illustrates a section of a burner assembly for a gas burner ofradiant heating type in accordance with a third preferred embodiment ofthe present invention, schematically;

FIG. 12 illustrates a section of a burner assembly for a gas burner ofradiant heating type in accordance with a fourth preferred embodiment ofthe present invention, schematically; and

FIG. 13 illustrates a section of an example of a variation of a burnerassembly for a gas burner of radiant heating type in accordance with afourth preferred embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

Reference will now be made in detail to the preferred embodiments of thepresent invention, examples of which are illustrated in the accompanyingdrawings.

The burner assembly in accordance with a first preferred embodiment ofthe present invention includes a burner chamber 140, a burner mat 150,and a baffle part. The burner chamber 140 is mounted on an underside ofthe burner housing 110 for receiving a mixed gas mixed at the mixingtube 130. The burner chamber 140 has an opened top. The burner chamber140 may have a shape the same with the related art as shown in thedrawing, or modified similar thereto. The burner mat 150 is placed ontop of the burner chamber 140, for making surface combustion of themixed gas supplied into the burner chamber 140.

The baffle part distributes the mixed gas to all part of the burner mat150 uniformly. The baffle part includes a mesh form of baffle plate 161in the burner chamber 140. That is, the mesh form of the baffle plate161 distributes the mixed gas, flowing from the mixing tube 130 towardthe burner mat 150, to an entire part of the burner mat 150, uniformly.

The baffle plate 161 divides the burner chamber 140 into an upper spaceand a lower space. That is, the baffle plate 161 divides the burnerchamber 140 into the lower space in communication with the mixing tube130 and the upper space having the burner mat 150 therein.

Referring to FIG. 3, an edge of the baffle plate 161 may be placed on astep formed in an inside wall of the burner chamber 140, which is liableto fall down by an external impact or ceaseless flow of the mixed gas.

Referring to FIG. 4, to cope with this, the embodiment of the presentinvention preferably provides separate supporting part 162 forsupporting the baffle plate 161. In this instance, the supporting part162 has a bottom part fixed to a bottom of an inside of the burnerchamber 140, and a top part to support a lower surface of the baffleplate 161.

Especially, in this case, it is preferable that the baffle plate 161 isspace from an inside wall of the burner chamber 140. This is because acase combustion is made smoother at an outer part of the burner mat 150than a central part has a better uniform heating efficiency than a casecombustion is made smoother at a central part of the burner mat 150 thanan outer part.

That is, transmission of radiant heat from the outer part to a centralpart of the burner mat 150 has a better combustion efficiency thantransmission of radiant heat from central part of the burner mat 150 tothe outer side. Moreover, the more combustion at the outer part of theburner mat 150, the more favorable for heating a large cooking containerwith relatively large surface area.

Of course, as shown in FIG. 5, a flow cutoff part 161 a may be furtherprovided in a central part of the baffle plate 161 for cutting off anupward flow of the mixed gas, so that, as described before, more mixedgas flows toward the outer part of the burner mat 150. Moreover, asshown in FIG. 6, the mesh form of baffle plate 161 may be formed to haveopenings formed the greater as it goes further to an outer side from thecentral part.

As illustrated with different examples, though the first embodiment ofthe present invention is applicable to a case the mixing tube 130 is incommunication with a bottom of the burner chamber 140, the firstembodiment of the present invention is also applicable to a case themixing tube 130 is in communication with a circumferential surface ofthe burner chamber 140.

A burning process of the mixed gas in the burner assembly having thefirst embodiment of the present invention applied thereto will bedescribed.

When the user ignites, gas and air are introduced into the mixing tube130, and mixed during the gas and air pass through the mixing tube 130.Then, the mixed gas is introduced into the burner chamber 140 incommunication with the mixing tube 130, and blows out into a combustingspace in the burner housing 110 through the burner mat 150. At thistime, the mixed gas is ignited with an igniting spark generated byigniting means (not shown).

In this instance, the mixed gas introduced into the burner chamber 140from the mixing tube 130 is distributed to entire part of the burner mat150 by the baffle plate 161 in the burner chamber 140. This is becausethe mesh form of the baffle plate 161 prevent the mixed gas fromconcentrating a part of the burner mat 150 during the mixed gas passesthrough the baffle plate 161.

According to this, smooth surface combustion is made at the burner mat150, and a radiant wave from the combustion transmits the glass plate120, and heats a heating object, to heat entire part, particularly, theouter part of the cooking container uniformly, even if the coolingcontainer is comparatively large.

FIG. 8 illustrates a section of a burner assembly for a gas burner ofradiant heating type in accordance with a second preferred embodiment ofthe present invention, schematically.

The burner assembly in accordance with a second preferred embodiment ofthe present invention includes a baffle part for distributing mixed gasto entire part of the burner mat uniformly, having a baffle cylinder 163in communication with the mixing tube 130. Of course, the bafflecylinder 163 may not be cylindrical, but polygonal. The baffle cylinder163 is provided between a bottom of the burner mat 150 and a side of theburner chamber 140 the mixed gas is introduced thereto, with an openedcircumference.

The baffle cylinder 163 has a diameter larger than an opening the mixedgas is introduced therethrough, and a bottom surface fixed to a bottomsurface of the burner chamber 140 around the opening the mixed gas isintroduced therethrough. The circumference of the baffle part 163 maynot be opened fully, but of a mesh form for uniform discharge of themixed gas.

However, the embodiment of the present invention suggests a plurality ofvanes 164 in the opened circumference of the baffle cylinder 163 forsmooth flow of the mixed gas to the outer part of an inside of theburner chamber 140.

Referring to FIG. 9A, for providing a circulating force to a mixed gasflow passing through the circumference of the baffle cylinder 163, thevanes 164 are slanted in a clockwise or counter clockwise direction whena section thereof is seen from above.

Of course, referring to FIG. 9B, for providing a circulating force to amixed gas flow passing through the circumference of the baffle cylinder163, the vanes 164 may be curved substantially in a clockwise or counterclockwise direction when a section thereof is seen from above.

The baffle cylinder 163 may have a top part fully closed, or of a meshform.

A burning process of the mixed gas in the burner assembly having thesecond embodiment of the present invention applied thereto is the samewith the first embodiment, wherein the concentration of the mixed gas tothe central part of the burner mat 150 is prevented by the bafflecylinder 163.

Moreover, the burner assembly in accordance with the second preferredembodiment of the present invention is also applicable to a structure inwhich the mixing tube 130 is in communication with a circumference ofthe burner chamber 140. For an example, as shown in FIG. 10, the bafflecylinder 163 is formed to surround a part of an inside of the burnerchamber 140 where the communication with the mixing tube 130 is made. Inthis instance, the baffle cylinder 163 may be of a mesh form, or aperforated, on the whole.

FIG. 11 illustrates a section of a burner assembly for a gas burner ofradiant heating type in accordance with a third preferred embodiment ofthe present invention.

The burner assembly for a gas burner of radiant heating type inaccordance with a third preferred embodiment of the present inventionincludes a baffle part for uniform distribution of mixed gas to entirepart of a burner mat 150, having a cutoff plate 165 for cutting of flowof the mixed gas.

The cutoff plate is positioned in an inside space of the burner chamber140 close to the opening of the mixing tube 130 the mixed gas isintroduced therethrough, for cutting off upward flow of the mixed gas.

The burner assembly further includes a supporting part 166 forsupporting the cutoff plate 165. The supporting part 166 is formed suchthat the cutoff plate is held in position in the inside space of theburner chamber 140.

The burner assembly for a gas burner of radiant heating type inaccordance with a third preferred embodiment of the present inventionhas a function substantially same with the burner assembly for a gasburner of radiant heating type in accordance with a second preferredembodiment of the present invention, and provides a similar combustionperformance.

FIG. 12 illustrates a section of a burner assembly for a gas burner ofradiant heating type in accordance with a fourth preferred embodiment ofthe present invention.

The burner assembly for a gas burner of radiant heating type inaccordance with a third preferred embodiment of the present inventionincludes a baffle part for uniform distribution of mixed gas to entirepart of a burner mat 150, having an impeller 167 at an opening the mixedgas is introduced into the burner chamber 140 therethrough.

The impeller 167 may be helical substantially, or slanted in a clockwiseor counter clockwise direction, for providing a circulating force to amixed gas flow passing through the impeller 167. Particularly, as shownin FIG. 13, though the impeller 167 may be on a bottom surface of aninside of the burner chamber 140 alike the foregoing embodiment, theimpeller 167 may be in the mixing tube 130.

It will be apparent to those skilled in the art that variousmodifications and variations can be made in the present inventionwithout departing from the spirit or scope of the invention. Thus, it isintended that the present invention cover the modifications andvariations of this invention provided they come within the scope of theappended claims and their equivalents.

Industrial Applicability

The burner assembly of the present invention permits uniform combustionat the burner mat by making the mixed gas supply to the entire part ofthe burner mat, uniform.

The burner assembly of the present invention permits combustion at anouter side of the burner mat that enables uniform heating of entire partof a cooking container, even if the cooking container is large.

1. A burner assembly for a gas burner of radiant heating typecomprising: a burner chamber for receiving mixed gas; a burner mat ontop of the burner chamber for making combustion; and a baffle partbetween a bottom of the burner mat and a side of the burner chamber themixed gas is introduced into the burner chamber therethrough, foruniform distribution of the mixed gas to an entire part of the burnermat.
 2. The burner assembly as claimed in claim 1, wherein the bafflepart includes a mesh form of a baffle plate in the burner chamber. 3.The burner assembly as claimed in claim 2, wherein the baffle plate hasa circumference spaced from an inside wall of the burner chamber.
 4. Theburner assembly as claimed in claim 2, wherein the baffle part furtherincludes a supporting part for holding the baffle plate inside of theburner chamber.
 5. The burner assembly as claimed in claim 2, whereinthe baffle plate includes a flow cutoff part at a central part forcutting off upward flow of the mixed gas.
 6. The burner assembly asclaimed in claim 2, wherein the baffle plate has openings formed thegreater as it goes further to an outer side from the central part. 7.The burner assembly as claimed in claim 1, wherein the baffle plate issubstantially cylindrical, and has a lower part in communication with aside of the burner chamber the mixed gas is introduced thereto, and anopened circumference.
 8. The burner assembly as claimed in claim 7,wherein the circumference of the baffle part includes a plurality ofvanes for guiding the mixed gas from the opening toward a circumferenceof an inside of the burner chamber.
 9. The burner assembly as claimed inclaim 8, wherein the vanes are slanted in a clockwise or counterclockwise direction when a section thereof is seen from above, forproviding a circulating force to the mixed gas flow.
 10. The burnerassembly as claimed in claim 8, wherein the vanes are curved in aclockwise or counter clockwise direction when a section thereof is seenfrom above, for providing a circulating force to the mixed gas flow. 11.The burner assembly as claimed in claim 7, wherein the baffle part has atop surface of a mesh form.
 12. The burner assembly as claimed in claim1, wherein the baffle plate includes a cutoff plate positioned close toa side of the burner chamber the mixed gas is introduced thereto, forcutting off a mixed gas flow.
 13. The burner assembly as claimed inclaim 1, wherein the baffle part includes an impeller at an opening themixed gas is introduced into the burner chamber therethrough, forguiding the mixed gas to a circumference side of an inside of the burnerchamber.
 14. A burner assembly for a gas burner of radiant heating typecomprising: a burner chamber for receiving mixed gas; a burner mat ontop of the burner chamber for making combustion; a baffle part of a meshform between a bottom of the burner mat and a side of the burner chamberthe mixed gas is introduced into the burner chamber therethrough; and asupporting part for supporting the baffle plate to be held in the burnerchamber.
 15. A burner assembly for a gas burner of radiant heating typecomprising: a burner chamber for receiving mixed gas; a burner mat ontop of the burner chamber for making combustion; a baffle part of asubstantially cylindrical form between a bottom of the burner mat and aside of the burner chamber the mixed gas is introduced into the burnerchamber therethrough, having a bottom in communication with a side of aninside of the burner chamber the mixed gas is introduced to the burnerchamber therethrough, and a circumference with a plurality of vanes forguiding the mixed gas toward the circumference of an inside of theburner chamber.
 16. A burner assembly for a gas burner of radiantheating type comprising: a burner chamber for receiving mixed gas; aburner mat on top of the burner chamber for making combustion; animpeller at an opening the mixed gas is introduced into the burnerchamber therethrough, for guiding the mixed gas toward a circumferenceof an inside of the burner chamber.